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#1
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measuring cutout holes in drywall
I've done this several times and this is something that just keeps eluding
me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. |
#2
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measuring cutout holes in drywall
Eigenvector wrote:
I've done this several times and this is something that just keeps eluding me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. Measuring will get you there if you are absolutely consistent about it but there are other ways to do it too. For example there are tools and fixtures to allow you to do it more easily. This is one example of several tools I've seen: http://www.handymark.net/instructions.html And if you prefer power tools, one of the Roto-Zip tools will allow you to make the cutout while following the edge of the box. I have even done it with carbon paper (if you remember back that far) and someone I worked with once told me that he had done the job by dabbing his wife's lipstick around the box to mark the board. -- John McGaw [Knoxville, TN, USA] http://johnmcgaw.com |
#3
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measuring cutout holes in drywall
Measure with the tape measure you have. It would be best if it is
a wide, heavy blade like a Stanley. Always try to hang some one piece of drywall that has no outs. Put the metal end of the tape measure against the installed sheet and measure the left and right side of the box, get fairly accurate numbers (1/8" or less). Do the same for the top and bottom. Layout on the new sheet. Cut INSIDE your marks (too tight), but angle the saw way to the outside of the cut. The back side of the rock will be way too big, the finish side will be almost too tight. You may need to ease the cut to fit, but it will be easy to do in the thin section left on the finish side. ______________________________ Keep the whole world singing . . . . DanG (remove the sevens) "Eigenvector" wrote in message ... I've done this several times and this is something that just keeps eluding me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. |
#4
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measuring cutout holes in drywall
Like Dan said, the biggest trick is to angle the saw away from the
center and cut to the inside of the line. Cut from the finished side. We had a team of sheet rockers on our job that called out measurements like......a heavy 9/16. On Mar 17, 6:17 pm, "DanG" wrote: Measure with the tape measure you have. It would be best if it is a wide, heavy blade like a Stanley. Always try to hang some one piece of drywall that has no outs. Put the metal end of the tape measure against the installed sheet and measure the left and right side of the box, get fairly accurate numbers (1/8" or less). Do the same for the top and bottom. Layout on the new sheet. Cut INSIDE your marks (too tight), but angle the saw way to the outside of the cut. The back side of the rock will be way too big, the finish side will be almost too tight. You may need to ease the cut to fit, but it will be easy to do in the thin section left on the finish side. ______________________________ Keep the whole world singing . . . . DanG (remove the sevens) "Eigenvector" wrote in message ... I've done this several times and this is something that just keeps eluding me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. |
#5
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measuring cutout holes in drywall
Just a thought, if you're going to be doing this very often, it might
be worthwhile investing in a zip saw (rotozip or equivalent) and use a guide blade. This is easy, quick, and super-accurate. Every box ends up pretty much perfect. good luck with your project! |
#6
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measuring cutout holes in drywall
"John McGaw" wrote in message ... Eigenvector wrote: I've done this several times and this is something that just keeps eluding me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. Measuring will get you there if you are absolutely consistent about it but there are other ways to do it too. For example there are tools and fixtures to allow you to do it more easily. This is one example of several tools I've seen: http://www.handymark.net/instructions.html And if you prefer power tools, one of the Roto-Zip tools will allow you to make the cutout while following the edge of the box. I have even done it with carbon paper (if you remember back that far) and someone I worked with once told me that he had done the job by dabbing his wife's lipstick around the box to mark the board. -- John McGaw Oh wow, I gotta get me one of those handymark tools. Thanks for the tip man. |
#7
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measuring cutout holes in drywall
"DanG" wrote in message ... Measure with the tape measure you have. It would be best if it is a wide, heavy blade like a Stanley. Always try to hang some one piece of drywall that has no outs. Put the metal end of the tape measure against the installed sheet and measure the left and right side of the box, get fairly accurate numbers (1/8" or less). Do the same for the top and bottom. Layout on the new sheet. Cut INSIDE your marks (too tight), but angle the saw way to the outside of the cut. The back side of the rock will be way too big, the finish side will be almost too tight. You may need to ease the cut to fit, but it will be easy to do in the thin section left on the finish side. ______________________________ Keep the whole world singing . . . . That's not a bad idea I guess. It doesn't address the source of my problems, which is that I have a tendency to measure 1/8 to 1/4" too long or too short on one side. That's kind of made worse by the fact that, for instance, I'm working with a cut piece of drywall. Like for instance the piece that I was working on today was 62 1/2" long on a door frame that was not level. So I take 4 measurements and believe I came up with equal dimensions within an 1/8" but when I transfer that to the sheet, it comes out off because my cut that I'm measuring from is not straight. I think I'm beginning to get an appreciation for just how important accuracy of your cuts is when doing drywall. "Eigenvector" wrote in message ... I've done this several times and this is something that just keeps eluding me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. |
#8
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measuring cutout holes in drywall
On Mar 17, 7:06 pm, "Eigenvector" wrote:
I've done this several times and this is something that just keeps eluding me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. There are tons of tricks. Best one - buy a Rotozip (or approved equal). Then all you have to do is poke a hole in the middle of the outlet box and run the Rotozip around the perimeter. Messy and noisy, but very effective. Sell it on eBay when you no longer need it. These are also very useful: http://www.amazon.com/Johnson-Level-.../dp/B0007LE5T4 R |
#9
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measuring cutout holes in drywall
On Mar 17, 8:32 pm, "RicodJour" wrote:
On Mar 17, 7:06 pm, "Eigenvector" wrote: I've done this several times and this is something that just keeps eluding me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. There are tons of tricks. Best one - buy a Rotozip (or approved equal). Then all you have to do is poke a hole in the middle of the outlet box and run the Rotozip around the perimeter. Messy and noisy, but very effective. Sell it on eBay when you no longer need it. These are also very useful:http://www.amazon.com/Johnson-Level-.../dp/B0007LE5T4 R One tip I have is that when you are measuring for an outlet box near a corner (or into the next sheet) , you will butt your tape into the corner. But you usually but your tape harder than the sheet will actually fit because of out of plumb/out of squareness , humps or bows or whatever. So pull the tape back slightly to allow for a little gappage in the corner. No need to measure in multiple places. A Rotozip is a good idea. But you will screw up a number of outlets before you get it figured out. You have to run it on the outside of the box, and keeping the bit riding on the outlet can take a little getting used to. If it is a small job, you won't have enough time to really get the hang of it, so you will wind up botching it up just as bad as if you cut them by hand. |
#10
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measuring cutout holes in drywall
Real men buy their own tube of lipstick and keep it in their tool
box. -- Christopher A. Young You can't shout down a troll. You have to starve them. .. "John McGaw" wrote in message ... : : Measuring will get you there if you are absolutely consistent about it : but there are other ways to do it too. For example there are tools and : fixtures to allow you to do it more easily. This is one example of : several tools I've seen: http://www.handymark.net/instructions.html And : if you prefer power tools, one of the Roto-Zip tools will allow you to : make the cutout while following the edge of the box. : : I have even done it with carbon paper (if you remember back that far) : and someone I worked with once told me that he had done the job by : dabbing his wife's lipstick around the box to mark the board. : : -- : John McGaw : [Knoxville, TN, USA] : http://johnmcgaw.com |
#11
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measuring cutout holes in drywall
On 18 Mar 2007 05:39:42 -0700, "marson" wrote:
A Rotozip is a good idea. But you will screw up a number of outlets before you get it figured out. You have to run it on the outside of the box, and keeping the bit riding on the outlet can take a little What about traciing a line around the box and then trying to cut that? getting used to. If it is a small job, you won't have enough time to really get the hang of it, so you will wind up botching it up just as bad as if you cut them by hand. |
#12
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measuring cutout holes in drywall
marson wrote:
A Rotozip is a good idea. But you will screw up a number of outlets before you get it figured out. You have to run it on the outside of the box, and keeping the bit riding on the outlet can take a little getting used to. If it is a small job, you won't have enough time to really get the hang of it, so you will wind up botching it up just as bad as if you cut them by hand. The Rotozip's aren't difficult to learn. If you rush anything, you'll screw it up. With the Rotozip, poke a hole where you marked the approximate center of the box, move the tool laterally until you hit the inside edge of the box, lift the Rotozip up and over the edge of the box slowly, push back in until the shoe is flush with the drywall, reverse pressure so you're pushing towards the inside of the box and move the tool around the perimeter. Slow and steady and it shouldn't be a problem for even a beginner. Wear ear plugs and a dust mask. R |
#13
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measuring cutout holes in drywall
On 19 Mar 2007 07:13:39 -0700, "RicodJour"
wrote: marson wrote: A Rotozip is a good idea. But you will screw up a number of outlets before you get it figured out. You have to run it on the outside of the box, and keeping the bit riding on the outlet can take a little getting used to. If it is a small job, you won't have enough time to really get the hang of it, so you will wind up botching it up just as bad as if you cut them by hand. The Rotozip's aren't difficult to learn. If you rush anything, you'll screw it up. With the Rotozip, poke a hole where you marked the approximate center of the box, move the tool laterally until you hit the inside edge of the box, lift the Rotozip up and over the edge of the box slowly, push back in until the shoe is flush with the drywall, reverse pressure so you're pushing towards the inside of the box and move the tool around the perimeter. Slow and steady and it shouldn't be a problem for even a beginner. Now I get it. Wear ear plugs and a dust mask. R |
#14
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measuring cutout holes in drywall
On Sun, 18 Mar 2007 09:21:19 -0400, "Stormin Mormon"
wrote: Real men buy their own tube of lipstick and keep it in their tool box. I have a couple bottles of red nail polish I use for marking things. Each comes with its own brush. Don't tell anyone. |
#15
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measuring cutout holes in drywall
On Mar 17, 5:06 pm, "Eigenvector" wrote:
I've done this several times and this is something that just keeps eluding me. What is the trick to measuring accurate drywall cutout holes for outlet boxes? The big issue that I seem to have is that the measurments need to be accurate by 1/8" all around for the job to look professional and for the outlet plate to sit firmly. But when I go to do it, no matter how many times I measure, I'm always off by 1/8" which puts one side 1/4" off and another snug against the box. I'm a firm believer in measure once cut twice (or is that measure twice cut once...) Are there better tools for measuring it? I'm using my tape measure which is accurate but unwieldy and with that metal lip on the forward edge it can be off by 1/4" if you get the tape bowed. This method gives you the most accurate cutouts. I had a window screen I wasn't using to which I attached a piece of clear plastic sheeting. Next, I found a reference point on the screen relative to the drywall. This can be a corner, the long side or short side of the screen. Lay the screen on the wall and use a marker to draw the outlet on the plastic. Take the screen to the drywall, line up to the reference point, and using a pushpin or nail, push holes in the drywall to outline the corners of the outlet box. Cut the drywall with your drywall saw. The principle used here is transference. However unlike using lipstick or carbon paper, you do not have to lift the drywall to find the outlet box. (Think of cutting an outlet box for a ceiling fixture.) The pushpin outline of the outlet box on the drywall is exact. If you want an exact cutout, cut outside the outline of the outlet box. This eliminates the problem in using a Robozip that cuts the inside of the outlet box but leaves the thickness of the outlet box to deal with. The window screen I have is made of metal and is semi-rigid. However any semi-rigid frame will do. I have even considered making a frame with pvc tubing and 90 degree corners. The tubing can be of different lengths and if the corners are not glued, they can be interchanged with different lengths as needed. Obviously the plastic sheet can be used separately mutiple times or mutiple outlet boxes for the same drywall panel can be marked at the same time. |
#16
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measuring cutout holes in drywall
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#17
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measuring cutout holes in drywall
On Mar 19, 11:57 am, "RicodJour" wrote:
wrote: The principle used here is transference. However unlike using lipstick or carbon paper, you do not have to lift the drywall to find the outlet box. (Think of cutting an outlet box for a ceiling fixture.) The pushpin outline of the outlet box on the drywall is exact. If you want an exact cutout, cut outside the outline of the outlet box. This eliminates the problem in using a Robozip that cuts the inside of the outlet box but leaves the thickness of the outlet box to deal with. You're fabricating a "problem" out of thin air! You don't cut around the interior of the box, you cut around the _outside_ of the box. The 1/8" zip bit leaves a 1/8" gap around the outside of the box allowing some wiggle room. R Maybe you should remember your own posting from March 19: There are tons of tricks. Best one - buy a Rotozip (or approved equal). Then all you have to do is poke a hole in the middle of the outlet box and run the Rotozip around the perimeter. Messy and noisy, but very effective. Sell it on eBay when you no longer need it. Poke a hole in the middle of the outlet box and cut around the perimeter? Did you really mean to poke a hole around the outside of the outlet box and cut around the outside of the perimeter. Good luck finding where to start the hole. |
#18
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measuring cutout holes in drywall
You've never used a RoTozip (that you can't spell) have you?
-- Steve Barker YOU should be the one controlling YOUR car. Check out: www.lightsout.org wrote in message oups.com... This eliminates the problem in using a Robozip that cuts the inside of the outlet box but leaves the thickness of the outlet box to deal with. |
#19
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measuring cutout holes in drywall
Again, it's obvious you've never used one. You punch in in the middle of
the box, move to the edge, jump outside and cut clockwise. Research before typing. It's like engage brain before speaking. -- Steve Barker YOU should be the one controlling YOUR car. Check out: www.lightsout.org "Edge" wrote in message oups.com... On Mar 19, 11:57 am, "RicodJour" wrote: wrote: The principle used here is transference. However unlike using lipstick or carbon paper, you do not have to lift the drywall to find the outlet box. (Think of cutting an outlet box for a ceiling fixture.) The pushpin outline of the outlet box on the drywall is exact. If you want an exact cutout, cut outside the outline of the outlet box. This eliminates the problem in using a Robozip that cuts the inside of the outlet box but leaves the thickness of the outlet box to deal with. You're fabricating a "problem" out of thin air! You don't cut around the interior of the box, you cut around the _outside_ of the box. The 1/8" zip bit leaves a 1/8" gap around the outside of the box allowing some wiggle room. R Maybe you should remember your own posting from March 19: There are tons of tricks. Best one - buy a Rotozip (or approved equal). Then all you have to do is poke a hole in the middle of the outlet box and run the Rotozip around the perimeter. Messy and noisy, but very effective. Sell it on eBay when you no longer need it. Poke a hole in the middle of the outlet box and cut around the perimeter? Did you really mean to poke a hole around the outside of the outlet box and cut around the outside of the perimeter. Good luck finding where to start the hole. |
#20
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measuring cutout holes in drywall
On Mar 19, 3:44 pm, "Steve Barker"
wrote: Again, it's obvious you've never used one. You punch in in the middle of the box, move to the edge, jump outside and cut clockwise. Research before typing. It's like engage brain before speaking. -- Steve Barker YOU should be the one controlling YOUR car. Check out:www.lightsout.org "Edge" wrote in message oups.com... On Mar 19, 11:57 am, "RicodJour" wrote: wrote: The principle used here is transference. However unlike using lipstick or carbon paper, you do not have to lift the drywall to find the outlet box. (Think of cutting an outlet box for a ceiling fixture.) The pushpin outline of the outlet box on the drywall is exact. If you want an exact cutout, cut outside the outline of the outlet box. This eliminates the problem in using a Robozip that cuts the inside of the outlet box but leaves the thickness of the outlet box to deal with. You're fabricating a "problem" out of thin air! You don't cut around the interior of the box, you cut around the _outside_ of the box. The 1/8" zip bit leaves a 1/8" gap around the outside of the box allowing some wiggle room. R Maybe you should remember your own posting from March 19: There are tons of tricks. Best one - buy a Rotozip (or approved equal). Then all you have to do is poke a hole in the middle of the outlet box and run the Rotozip around the perimeter. Messy and noisy, but very effective. Sell it on eBay when you no longer need it. Poke a hole in the middle of the outlet box and cut around the perimeter? Did you really mean to poke a hole around the outside of the outlet box and cut around the outside of the perimeter. Good luck finding where to start the hole. Well, of course I personally wouldn't hang drywall without a rotozip handy (although I know pros who prefer to cut their boxes by hand). But if a rookie homeowner is hanging ten sheets of drywall, I don't really think it's great advice. I botched some outlets when I first picked up a rotozip, and have seen other rookies do it too. There are a few ways to screw up--not hitting the inside of the box, wandering off of the box, not having the sheet tight to the box...these lessons generally get learned on the job, and by the time he is done with his 10 sheets, he will have a half dozen boxes to fix, just like if he had saved his money and cut them by hand. Plus his hair and clothes will be full of gypsum dust. |
#22
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measuring cutout holes in drywall
Edge wrote:
On Mar 19, 11:57 am, "RicodJour" wrote: wrote: The principle used here is transference. However unlike using lipstick or carbon paper, you do not have to lift the drywall to find the outlet box. (Think of cutting an outlet box for a ceiling fixture.) The pushpin outline of the outlet box on the drywall is exact. If you want an exact cutout, cut outside the outline of the outlet box. This eliminates the problem in using a Robozip that cuts the inside of the outlet box but leaves the thickness of the outlet box to deal with. You're fabricating a "problem" out of thin air! You don't cut around the interior of the box, you cut around the _outside_ of the box. The 1/8" zip bit leaves a 1/8" gap around the outside of the box allowing some wiggle room. R Maybe you should remember your own posting from March 19: There are tons of tricks. Best one - buy a Rotozip (or approved equal). Then all you have to do is poke a hole in the middle of the outlet box and run the Rotozip around the perimeter. Messy and noisy, but very effective. Sell it on eBay when you no longer need it. Poke a hole in the middle of the outlet box and cut around the perimeter? Did you really mean to poke a hole around the outside of the outlet box and cut around the outside of the perimeter. Good luck finding where to start the hole. Outside of the perimeter? Is that the opposite of the interior of the inside? I used a word that is quite specific - perimeter. http://dictionary.reference.com/search?q=perimeter Finding the starting point - the center of the box - is really not hard. Mark a spot on the floor indicating the rough centerline of each outlet box. They're all the same height, or should be, so you only have to know the average height of the box centerline. You have 1" of lateral leeway and 2" of vertical. R |
#23
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measuring cutout holes in drywall
On Sun, 18 Mar 2007 09:21:19 -0400, "Stormin Mormon"
wrote: Real men buy their own tube of lipstick and keep it in their tool box. I'm a real man, but I keep my lipstick in my purse ! My gay boyfriend gave me my snakeskin purse for valentines day, but I bought my own lipstick. The color is "ruby frost", and he loves that color kissed onto his weenie. |
#24
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measuring cutout holes in drywall
On 17 Mar 2007 18:32:03 -0700, "RicodJour"
wrote: but very effective. Sell it on eBay when you no longer need it. You'll get 99 cents on Ebay, but just add $79.99 shipping and handling. |
#25
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measuring cutout holes in drywall
On 19 Mar 2007 07:13:39 -0700, "RicodJour"
wrote: marson wrote: A Rotozip is a good idea. But you will screw up a number of outlets before you get it figured out. You have to run it on the outside of the box, and keeping the bit riding on the outlet can take a little getting used to. If it is a small job, you won't have enough time to really get the hang of it, so you will wind up botching it up just as bad as if you cut them by hand. The Rotozip's aren't difficult to learn. If you rush anything, you'll screw it up. With the Rotozip, poke a hole where you marked the approximate center of the box, move the tool laterally until you hit the inside edge of the box, lift the Rotozip up and over the edge of the box slowly, push back in until the shoe is flush with the drywall, reverse pressure so you're pushing towards the inside of the box and move the tool around the perimeter. Slow and steady and it shouldn't be a problem for even a beginner. Wear ear plugs and a dust mask. R And dont chop up the wires in the box. |
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